US647863A

US647863A - Hand-propelled vehicle.

Info

Publication number: US647863A
Application number: US71455799A
Authority: US
Inventors: William Nachtwey
Original assignee: Individual
Current assignee: Individual
Priority date: 1899-04-26
Filing date: 1899-04-26
Publication date: 1900-04-17
Anticipated expiration: 1917-04-17

Description

Patented Apr. 1 7, |900.

W. NACHTWEY. HAND PnoPELLEn VEHICLE.

(Application led Apr. 26, 1899.)

mu lmmm' THE Ncmms Ps1-sns co.. Pnomurno. wAsmumoN. n, c.

Nrrnn STATES IATi-iivrv @lirica IVILLIALWI NACIITIVEY, OF KEVANEE, ILLINOIS.

HAN D-PRO PELLED VEHICLE.

SPECIFICATION forming part of :Letters Patent Nac-17,863, dated April 17, ieoo.

' Appnmionlueanpai 2e, 1899. serial 110.714,55?. (No man.)

To @ZZ whom t may con/cern:

Be it known that I, WILLIAM NACHTWE Y, a citizen of the United States, residing at Kewanee, in the county of Henry, and in the State of Illinois, have invented certain new and useful Improvements in I-Iand-Propelled Vehicles; and I do hereby declare that the followj ing is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which- Figure lis a longitudinal section of a vehicle embodying my invention; Fig. 2, a detail view in cross-section on the line xm of Fig. l, and Fig. 3 a detail view in perspective of the operating-levers.

Letters of like name and kind refer to like parts in each of the figures.

The object of my invention is to provide improvements in driving mechanism of the lever-and-crank type; and to this end said invention consists in the mechanism having the construction and combination of parts substantially as hereinafter specified.

I have designed my invention for and illustrate it as embodied in a vehicle having four supporting-wheels; but it is to be understood that such embodiment is merely illustrative and not intended to be restrictive of the use of the invention.

In the embodiment of my invention in a four-Wheeled vehicle I employa suitable body A, containing a seat B and mounted upon front and rear axles C and C, each carrying two Wheels D and D, preferably of the same construction as bicycle-wheels. The front axle has, as usual, a pivoted or swiveled connection with the body A for steering purposes, and suitable foot-operated steering devices are provided for managing said axle. Each of the rear-axle wheels D is journaled to turn on the axle, and each by suitable gearing is connected with a crank-shaft E, mounted in bearings depending from the body A and supporting said shaft crosswise of the latter. Said gearing may, as shown, be simply two meshing toothedwheels F and G, fastened, respectively, to the Wheel D and shaft E, or sprocketwheels and chain maybe the form of gearing. There are two cranks c and e on the shaft E and placed ninety degrees apart, so as to avoid a dead-center, and each crank is connected by a pitman H with the lower end of an operating-lever I, that passes through an opening in the bottom of the body A and is pivoted on a rod or shaft K, secured on the floor of the body A. Pivoted detachably to the side of the lever I is a supplemental hand-lever L, whose axis of motion is parallel with or extends in the same direction as the axis of the lever I, so that the two levers are capable of independent motion. The amount of possible independent movement is fixed by stops or projections M and M on the side of the leverI, to respectively engage opposite edges of the lever L at the desired limit of motion in both directions. Preferablya bar or connecting-piece m extends between the projections and serves toconfine or hold the hand-lever to the side of the lever I. The hand-lever K at a point above the top of the lever I passes between parallel guidebars N and N, that have stops O and O at their extremities to respectively engage the opposite edges of the lever K, and thus arrest its motion in one direction or the other. The two sets of bars N and N are suitably attached to and supported by the body A. The distance between the stops O and O is such that the angular motion of the lever K is considerably less than the angular motion of the lever I, and this is the purpose of the compound-lever construction,to the end that with a given radius of crank e a much shorter movement of the operating-lever, and consequently less stretch of the arm of the operator, can be had than with an ordinary simple lever. In working with the compound lever the two levers I and K will when power is applied to the handle-lever K be moved together by reason of the engagement of the latter with that one of the projections m which is on the advancing side of the lever K, and though the latter is arrested in its movement by a stop O before the lever I completes its movement yet by reason of its momentum said lever I will continue and complete its movement, carrying the just-engaged projection m away from the lever K and bringing the other projection m to the lever K in position to be engaged by the latter on -the reverse movement thereof. Thus by my invention the advantage of a crank of long radius is secured with a comparatively-short movement of the handle member of the operatinglever. With the two compound levers working alternately the crank-shaft is continu# p ously revolved and'without unduestretchin-g f or reach of the arms of the operator.

Having thus described my invention, what I claim is; l 1. The combination of a sh aft to be revolved,

a power-transmitting device comprising two independently movable members, connections between one of said members and the shaft,fmeans cooperating with the other mem y ber to limit its movement to a .shorter d'istance than that ofthe shaft-connected mem.- p

ber, and a loose connection between the two members, wherebyv power may be transmitted to the shaft-connected member by, and

' the latter may continue its movement independent of the other member, ksubstantially as and. for the purpose described.

2.` The combination of a shaft to be revolved, a lever connected with said shaft, a second lever pivoted'to swing in the same direction as the Iirst, projections on the iirst lever-on lever connected withl the same, carrying projections, a second lever pivoted tothe rst, and extending through the space between the projections, and fixed stops to engage the second lever when it has moved a shorter angular distance than the first lever, said stops being respectively, onopposite sides of said second lever, in the path of movement thereof substantially as and for the purpose described.

4. The combination of a vehicle-body, carrying-wheels therefor, a crank-shaft mounted on said body and geared to certain of the wheels, two operating-levers connected, respectively, to two cranks on the crank-shaft, each of which levers is composed of two pivoted members, having a 'loose connection, whereby one can move independently of the other, and means to restrict one member to vless angular movement than the other, substantially as and for the purpose described.

In testimony that I claim the foregoing I have hereunto set my hand this-18th day of April, A. D. 1899.

WILLIAM NAoH'rwEY.

Witnesses: i y

CEAS. vJ. WILLIAMSON, JAs. E. HU'roHINsoN.